Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Noncontrolling Interest
Beginning balance at Dec. 31, 2020	$ 176,830	$ 111	$ 44,583	$ 165,107	$ (12,703)	$ (20,268)	$ 0
Increase (Decrease) in Stockholders' Equity
Net income (loss)	1,584			1,618			(34)
Other comprehensive loss, net of tax:
Pension liability adjustment	182					182
Foreign currency translation adjustment	961					940	21
Unrealized derivative gain on cash flow hedges	0
Cash flow hedges reclassified to earnings	273					273
Issuance of common shares, net of share withheld for taxes	(547)		(2,146)		1,599
Stock-based compensation	1,213		1,213
Investment of noncontrolling interest	396						396
Ending balance at Jun. 30, 2021	180,892	111	43,650	166,725	(11,104)	(18,873)	383
Beginning balance at Mar. 31, 2021	176,886	111	43,943	163,849	(11,783)	(19,588)	354
Increase (Decrease) in Stockholders' Equity
Net income (loss)	2,854			2,876			(22)
Other comprehensive loss, net of tax:
Pension liability adjustment	91					91
Foreign currency translation adjustment	538					487	51
Unrealized derivative gain on cash flow hedges	0
Cash flow hedges reclassified to earnings	137					137
Issuance of common shares, net of share withheld for taxes	0		(679)		679
Stock-based compensation	386		386
Ending balance at Jun. 30, 2021	180,892	111	43,650	166,725	(11,104)	(18,873)	383
Beginning balance at Dec. 31, 2021	183,610	111	43,272	168,733	(10,179)	(18,845)	518
Increase (Decrease) in Stockholders' Equity
Net income (loss)	390			444			(54)
Other comprehensive loss, net of tax:
Pension liability adjustment	99					99
Foreign currency translation adjustment	(4,568)					(4,592)	24
Unrealized derivative gain on cash flow hedges	698					698
Cash flow hedges reclassified to earnings	93					93
Issuance of common shares, net of share withheld for taxes	(466)		(2,254)		1,788
Stock-based compensation	1,183		1,183
Ending balance at Jun. 30, 2022	181,039	111	42,201	169,177	(8,391)	(22,547)	488
Beginning balance at Mar. 31, 2022	181,697	111	42,153	167,167	(9,200)	(19,117)	583
Increase (Decrease) in Stockholders' Equity
Net income (loss)	1,976			2,010			(34)
Other comprehensive loss, net of tax:
Pension liability adjustment	50					50
Foreign currency translation adjustment	(3,688)					(3,627)	(61)
Unrealized derivative gain on cash flow hedges	147					147
Cash flow hedges reclassified to earnings	0
Issuance of common shares, net of share withheld for taxes	(68)		(877)		809
Stock-based compensation	925		925
Ending balance at Jun. 30, 2022	$ 181,039	$ 111	$ 42,201	$ 169,177	$ (8,391)	$ (22,547)	$ 488